\documentclass[12pt]{article}
\usepackage{showkeys}
\begin{document}
\nocite{*}
\title{FDS\_mathcomp.bib References}
\maketitle

% order refs as in .bib file
%\bibliographystyle{unsrt}

% order refs alphabetically (by author)
\bibliographystyle{plain}
\bibliography{FDS_mathcomp}
\end{document}

